[Thermoresistance of acid producing psychrotrophic bacteria isolated from milk].

Abstract:

:An acidificant psychrotrophic bacteria was isolated from raw milk from Bromocresol Purple Agar medium, after incubation at 7 degrees C, for 10 days. Cells from the culture, at the beginning of the stationary phase, were inoculated sterilized in powder milk, reconstituted at 12% of total solids, resulting in approximately 10(8) cells per milliliter. Portions of 3 ml of inoculated milk were transferred to borosilicate tubes and were submitted to cells resistance determination at 62, 70, 75 and 80 degrees C, by the TDT tube method. The survival curves at the respective temperatures and the curve of thermal death were drawn. The bacteria presented a D75 degrees C value of 0.15 minutes and z = 8.7 degrees C. Treatments LTLT and HTST of pasteurization promoted 5.27 and 0.53 decimal reductions in the number of available bacteria cells, respectively. The conclusion of this study was that the isolated bacteria is destroyed only by the treatment LTLT of pasteurization.

journal_name

Arch Latinoam Nutr

authors

Alfenas Rde C

subject

Has Abstract

pub_date

1999-03-01 00:00:00

pages

72-5

issue

1

eissn

0004-0622

issn

2309-5806

journal_volume

49

pub_type

杂志文章
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    authors: Barbosa JM,Cabral PC,de Lira PI,Florêncio TM

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    journal_title:Archivos latinoamericanos de nutricion

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    doi:

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  • [Delphi method to identify education material on healthy food for teachers, school-age children and their parents].

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    pub_type: 杂志文章

    doi:

    authors: Vio F,Lera L,Fuentes-García A,Salinas J

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    journal_title:Archivos latinoamericanos de nutricion

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    doi:

    authors: Castro-González MI,Ojeda A,Silencio JL,Cassis L,Ledesma H,Pérez-Gil F

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    pub_type: 杂志文章

    doi:

    authors: Mueses C,de León L,Matute J,Bressani R

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  • [Bone mass in celiac patients].

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    pub_type: 杂志文章

    doi:

    authors: Leiva L,Burrows R,Ríos G,Bergenfried C,Larrain F,Wenger J,Lillo R,Espinoza J,Pumarino H,Muzzo S

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    journal_title:Archivos latinoamericanos de nutricion

    pub_type: 杂志文章

    doi:

    authors: Correa AD,Jokl L,Carlsson R

    更新日期:1986-09-01 00:00:00

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    pub_type: 杂志文章

    doi:

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    pub_type: 杂志文章

    doi:

    authors: Gallegos Tintoré S,Pacheco Aguirre J,Betancur Ancona D,Chel Guerrero L

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    pub_type: 杂志文章

    doi:

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    pub_type: 杂志文章

    doi:

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  • [LATINFOODS and its role in the generation and compilation of data for Latin America].

    abstract::LATINFOODS is the Latin American organization, affiliated to INFOODS, involved in the generation and compilation of data on the composition of foods, and with the methods of analysis and the users of the data. UN and FAO are the organizations which have supported the activities of this network, through the realization...

    journal_title:Archivos latinoamericanos de nutricion

    pub_type: 杂志文章

    doi:

    authors: Masson L

    更新日期:1999-09-01 00:00:00

  • [Latent heat of vaporization in amaranth (Amaranthus hybridus)].

    abstract::The vapor pressure at four temperatures and 10 moisture contents in a range between 26.8 and 3.6 g/100 dry matter, were determined by the manometric method in two samples of milled amaranth seeds, known as "ataco" or "sangoracha". For each humidity, the relationship between vapor pressure of the flour and vapor pressu...

    journal_title:Archivos latinoamericanos de nutricion

    pub_type: 杂志文章

    doi:

    authors: Alvarado JD,Toaza E,Coloma G

    更新日期:1990-09-01 00:00:00

  • [Are there any nutritional deficiencies in the Mediterranean Diet?].

    abstract::The Mediterranean diet has been described as a model from a nutritional and sanitary point of view due to the proportion in which it includes all the food groups. Nevertheless, in the last few years changes in lifestyle have triggered a move away from the recommended intakes in relation to several nutrients. The intak...

    journal_title:Archivos latinoamericanos de nutricion

    pub_type: 杂志文章

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    authors: Ortega RM,López Sobaler AM,Aranceta J,Serra Majem L

    更新日期:2004-06-01 00:00:00

  • [Lactose tolerance and milk consumption: myths and realities].

    abstract::The disaccharide lactose, the principal carbohydrate of animal milks, requires the enzyme lactase to split it to glucose and galactose. Undigested lactose passes to the colon where fermentation produces hydrogen and short-chain fatty acids that can cause abdominal distention, pain and sometimes diarrhea. Persistence o...

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    abstract::The effect of the addition of lactoferrin on Staphylococcus aureus to Minas frescal cheese was evaluated. Three cheeses were made: control (S. aureus), Lf-2% (2% lactoferrin + S. aureus) and Lf-4% (4% lactoferrin + S. aureus). Cheeses were packaged and S. aureus populations were determined on days 1, 8, 15, 22 and 29 ...

    journal_title:Archivos latinoamericanos de nutricion

    pub_type: 杂志文章

    doi:

    authors: Da Silva AS,Honjoya ER,Cardoso SC,De Souza CH,Costa Mde R,De Santana EH,Aragon-Alegro LC

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  • [Characteristics of urban families with malnourished infants].

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  • [Stability of carotenoid pigments in foods].

    abstract::Carotenoids are responsible for the colour of a wide variety of both vegetable and animal foods. Several studies published recently have shown that these compounds have a beneficial effect in human health, thus, from a nutritional point of view, it is important to know the factors related to their degradation, because...

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    pub_type: 杂志文章,评审

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    authors: Meléndez-Martínez AJ,Vicario IM,Heredia FJ

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  • [Estimation of body fat by DXA and the four compartment model in Mexican youth].

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    pub_type: 杂志文章

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    authors: Ramírez E,Valencia ME,Moya Camarena SY,Alemán-Mateo H,Méndez RO

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    abstract:OBJECTIVE:To know the distribution of certain anthropometric parameters and cardiovascular risk factors: hypercholesterolemia, arterial hypertension, obesity, sedentary lifestyle, smoking and diabetes mellitus in the population of the Canary Islands. DESIGN:Epidemiological, cross-sectional study, with description of p...

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    abstract::The development of diverse types of foods of low caloric value and with high content in dietary fiber have occupied a preponderant place in the food industry in the last years, due to the growing interest of the consumers for a healthy and nutritious diet. Pre-cooked or quick to prepare foods are attractive for the ti...

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    abstract::Copper (Cu) deficiency is associated with changes in arterial pressure. The effect depends of the age of initiation of the copper-deficient diet. Copper deficiency started at a young age causes hypotension. When initiated in older or adult animals, copper deficiency can cause hypertension. A case-control study was car...

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    doi:

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    abstract::Obesity produces greater circulation of free fatty acids (FFA). In adults, the FFA composition changes in states of obesity; in adolescents, the results are contradictory. This study compare the FFA profile of obese youth with and without Metabolic Syndrome (MetS) and explore the association between FFA and metabolic ...

    journal_title:Archivos latinoamericanos de nutricion

    pub_type: 杂志文章

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    authors: Bermudez JA,Velásquez CM

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  • [Various foods of intermediate humidity on the Chilean market].

    abstract::Water activity, moisture content, pH, total sugars and sodium chloride content of commercial foods with reduced water content found in Chilean supermarkets were determined. The sample included meat, dairy, fruits and confectionary products. Principles involved in the reduction of water activity are discussed for each ...

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    pub_type: 杂志文章

    doi:

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  • [Presence of total coliforms, Escherichia coli and Listeria sp. in enteral formulas].

    abstract::The presence of total coliforms, Escherichia coli and Listeria sp. was evaluated in 65 samples of enteral nutrition formulas. In more than the 75% of the samples made up from cooked vegetables, fruits or meat broth, the score level of total coliforms was of 10(4) UFC/g. In 12-31% of the different enteral food formula,...

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    pub_type: 杂志文章

    doi:

    authors: Arias ML,Monge R,Rodríguez J

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    pub_type: 杂志文章

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    authors: Isabel Giacopini M,Guerrero O,Moya M,Bosch V

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    doi:

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